Malky Mackay will not be appointed as the new Crystal Palace manager after talks broke down amid disagreement over his potential backroom team, a source has told ESPN.

Former Cardiff boss Mackay had seemed certain to be named as the successor to Tony Pulis, who left the Eagles two days before the start of the new Premier League season, only for differences to arise in the last 24 hours.

The Scot had been co-chairman Steve Parish's preferred choice because he seemed willing to agree to all the club's medium-term plans - including the transfer approach that was such a point of contention for Pulis.

He was originally selected over Tim Sherwood because the latter wanted to bring in his own team, and that means Palace could yet restart their search for a new Selhurst Park boss.

Parish wants Pulis' former assistant Keith Millen to stay in any new regime, and Millen is now expected to be in charge when Palace host West Ham at the weekend.

Mackay and Palace's sporting director Iain Moody had previously worked together at Cardiff City, where they achieved promotion to the Premier League in 2012-13 only for both to leave midway through last season.

Moody left in October after being told he was being replaced by 23-year-old Alisher Apsalyamov and took up his post at Palace soon afterwards.

Mackay stayed on, only to be sacked by Cardiff owner Vincent Tan on December 27 following a 3-0 defeat to Southampton. Cardiff were relegated with his replacement, Ole Gunner Solskjaer, unable to arrest the club's slide down the table.